The rock drill is used for rock drilling,blasting holes and other drilling works in the quarries,small coal mines and other constructions. Â It is suitable for drilling of horizontal or inclined holes on the medium-hard rock.When it is matched with air leg Model FT100,it can blast holes from different directions and angles. Â Blast hole diameter is between 36mm and 42mm.With an efficient depth from 1.5m to 2m. Â It is recommended to be matched with Model 1 py-1.2/0.39 air compressor which is powered by Model RS1100 diesel engine.other suitable air compressors can also be matched with this rock drill.